Finding the Fourth Proportional to 12,632.30, 17,419.64 and 8,381.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,632.30 : 17,419.64 = 8,381.87 : x
2. Step 2: Convert to fraction form
   12,632.30/17,419.64 = 8,381.87/x
3. Step 3: Cross multiply
   12,632.30x = 17,419.64 × 8,381.87
4. Step 4: Simplify right side
   12,632.30x = 146,009,116.02
5. Step 5: Solve for x
   x = 146,009,116.02/12,632.30
6. Step 6: Final answer
   x = 11,558.40